#5108: Allow unicode sub/superscript symbols in both identifiers and operators
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Reporter: mikhail.vorozhtsov | Owner:
Type: feature request | Status: new
Priority: normal | Milestone: 7.6.1
Component: Compiler (Parser) | Version: 7.1
Resolution: | Keywords: lexer unicode
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: None/Unknown | Difficulty: Unknown
Testcase: | Blockedby:
Blocking: | Related:
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Changes (by simonpj):
* status: patch => new
Comment:
Mikhail,
The first issue here is whether we ''want'' sub/superscripts (or indeed
primes) on operators, and that's a language design question. We tend
towards "no" but if there was a clear consensus from the Unicode-aware
Haskell community, we'd accept it. The implementation questions are
probably resolvable.
Could you start a thread on glasgow-haskell-users to ask them?
(A possible outcome might be that operators should not allow primes! ie
the current behaviour is inconsistent, as you point out. And it's wierd
that you can use Unicode primes but not Ascii ones!)
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5108#comment:7>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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